package zisu.netty.practice.netty.codec2;

import io.netty.buffer.ByteBuf;
import io.netty.buffer.Unpooled;
import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.ChannelInboundHandlerAdapter;
import io.netty.util.CharsetUtil;
import zisu.netty.practice.netty.codec.StudentPOJO;

import java.util.Random;

/**
 * @Desc: ""
 * @Author: caixiang
 * @DATE: 2020/7/8 14:03
 */
public class NettyClientHandler extends ChannelInboundHandlerAdapter {
    //当通道就绪的时候 就会触发该方法
    @Override
    public void channelActive(ChannelHandlerContext ctx) throws Exception {
        //随机的发送Student 或者 Worker对象
        int i = new Random().nextInt(3);
        MyDataInfo.MyMessage myMessage = null;
        if(0 == i){ //发送Student
            myMessage = MyDataInfo.MyMessage.newBuilder().setDataType(MyDataInfo.MyMessage.DataType.StudentType)
                    .setStudent(MyDataInfo.Student.newBuilder().setName("name5").setId(5).build()).build();
        }else {  //发送一个worker对象
            myMessage = MyDataInfo.MyMessage.newBuilder().setDataType(MyDataInfo.MyMessage.DataType.WorkerType)
                    .setWorker(MyDataInfo.Worker.newBuilder().setName("name6").setAge(22).build()).build();
        }
        ctx.writeAndFlush(myMessage);
    }

    //当通道有读取事件时，会触发
    @Override
    public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {
        ByteBuf data_is_haha = Unpooled.copiedBuffer("data is haha", CharsetUtil.UTF_8).retain();

        ByteBuf buf = (ByteBuf) msg;
        System.out.println("服务器回复的消息："+buf.toString(CharsetUtil.UTF_8));
        System.out.println("服务器地址："+ctx.channel().remoteAddress());
    }

    @Override
    public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) throws Exception {
        cause.printStackTrace();
        ctx.close();
    }
}
